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Definition of Umbra in English :

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Umbra meaning in English

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Umbra

see synonyms of umbra

Noun

1. umbra

a region of complete shadow resulting from total obstruction of light

WordNet Lexical Database for English. Princeton University. 2010.

Umbra

see synonyms of umbra
noun plural -brae (-briː) or -bras
1. 
a region of complete shadow resulting from the total obstruction of light by an opaque object, esp the shadow cast by the moon onto the earth during a solar eclipse
2. 
the darker inner region of a sunspot

Collins English Dictionary. Copyright © HarperCollins Publishers

Umbra

see synonyms of umbra
nounWord forms: plural ˈumbrae (ˈʌmbri ; umˈbrē) or ˈumbras
1. 
shade or a shadow
2. 
the dark central cone of shadow projecting from a planet or satellite on the side opposite the sun
3. 
the dark central part of a sunspot
4.  Rare
a phantom, or ghost
5.  Physics
a perfect or complete shadow, in which no direct light is received from the source of illumination

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.

Umbra

see synonyms of umbra
n. pl. um·bras or um·brae (-brē)
1. A dark area, especially the blackest part of a shadow from which all light is cut off.
2. Astronomy
a. The completely dark central portion of the shadow cast by the earth, moon, or other body during an eclipse.
b. The darkest region of a sunspot.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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